Messages in this thread | | | Date | Thu, 22 Mar 2007 00:53:10 +0100 | From | Eric Dumazet <> | Subject | Re: [RFC] : Is /proc/kcore still usefull and/or maintained ? |
| |
I stand corrected : This is a new bug
The /proc/kcore problem appears with linux-2.6.21-rc4-mm1
fd = open("/proc/kcore", 0); llseek(fd, ...) returns an -EINVAL error
Quick code inspection (before going to sleep...) shows that
proc_reg_llseek() (file fs/proc/inode.c)
is doing something like :
rv = -EINVAL; llseek = pde->proc_fops->llseek; spin_unlock(&pde->pde_unload_lock); if (llseek) rv = llseek(file, offset, whence);
As kcore dont have a .llseek handler, proc_reg_llseek() returns -EINVAL;
Previous kernel was probably calling a default llseek() handler.
if (!llseek) llseek = default_llseek;
Hum ??? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |